second set of ANSI C changes: C89-style function declarations, more inline functions, remove register keyword

builtins/test.def

@@ -1,7 +1,7 @@
 This file is test.def, from which is created test.c.
 It implements the builtin "test" in Bash.
 
-Copyright (C) 1987-2015 Free Software Foundation, Inc.
+Copyright (C) 1987-2015,2022 Free Software Foundation, Inc.
 
 This file is part of GNU Bash, the Bourne Again SHell.
 
@@ -131,8 +131,7 @@ $END
 
 /* TEST/[ builtin. */
 int
-test_builtin (list)
-     WORD_LIST *list;
+test_builtin (WORD_LIST *list)
 {
   char **argv;
   int argc, result;